Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Check Door Switch
| Step | Check | Yes | No |
|---|---|---|---|
| 1. CHECK DOOR SWITCH CIRCUIT. Measure the voltage between the body integrated unit harness connector terminal and chassis ground. Connector & terminal Front door RH: (i84) No. 32 (+) - Chassis ground (-): Front door LH: (i84) No. 19 (+) - Chassis ground (-): Rear door RH: (i84) No. 18 (+) - Chassis ground (-): Rear door LH: (i84) No. 31 (+) - Chassis ground (-): Rear gate: (i84) No. 17 (+) - Chassis ground (-): |
Is the voltage 0 V when each door or rear gate is opened? | Go to step 2. | Go to step 3. |
| 2. CHECK DOOR SWITCH CIRCUIT. Measure the voltage between the body integrated unit harness connector terminal and chassis ground. Connector & terminal Front door RH: (i84) No. 32 (+) - Chassis ground (-): Front door LH: (i84) No. 19 (+) - Chassis ground (-): Rear door RH: (i84) No. 18 (+) - Chassis ground (-): Rear door LH: (i84) No. 31 (+) - Chassis ground (-): Rear gate: (i84) No. 17(+) - Chassis ground (-): |
Is the voltage more than 10 V when each door or rear gate is closed? | The door switch is OK. | Go to step 3. |
3. CHECK DOOR SWITCH.
Connector & terminal (R12) Front RH door switch: (R9) Front LH door switch: (R16) Rear RH door switch: (R22) Rear LH door switch: No. 1 - No. 3: Rear gate latch switch (Wagon model): (D46) No. 1 - No. 2: |
Is the resistance more than 1 MΩ when door switch is pushed? | Go to step 4. | Replace the door switch. |
| 4. CHECK DOOR SWITCH. Measure the resistance between door switch terminals. Connector & terminal (R12) Front RH door switch: (R9) Front LH door switch: (R16) Rear RH door switch: (R22) Rear LH door switch: No. 1 - No. 3: Rear gate latch switch (Wagon model): (D46) No. 1 - No. 2: |
Is the resistance less than 1 Ω when door switch is released? | Check the harness for open or short between body integrated unit and door switch. | Replace the door switch. |
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.